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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gl/SkNativeGLContext.h"
#include "AvailabilityMacros.h"
SkNativeGLContext::AutoContextRestore::AutoContextRestore() {
fOldCGLContext = CGLGetCurrentContext();
}
SkNativeGLContext::AutoContextRestore::~AutoContextRestore() {
CGLSetCurrentContext(fOldCGLContext);
}
///////////////////////////////////////////////////////////////////////////////
SkNativeGLContext::SkNativeGLContext()
: fContext(NULL) {
}
SkNativeGLContext::~SkNativeGLContext() {
this->destroyGLContext();
}
void SkNativeGLContext::destroyGLContext() {
if (NULL != fContext) {
CGLReleaseContext(fContext);
}
}
const GrGLInterface* SkNativeGLContext::createGLContext() {
SkASSERT(NULL == fContext);
CGLPixelFormatAttribute attributes[] = {
#if MAC_OS_X_VERSION_10_7
kCGLPFAOpenGLProfile, (CGLPixelFormatAttribute) kCGLOGLPVersion_3_2_Core,
#endif
kCGLPFADoubleBuffer,
(CGLPixelFormatAttribute)0
};
CGLPixelFormatObj pixFormat;
GLint npix;
CGLChoosePixelFormat(attributes, &pixFormat, &npix);
if (NULL == pixFormat) {
SkDebugf("CGLChoosePixelFormat failed.");
return NULL;
}
CGLCreateContext(pixFormat, NULL, &fContext);
CGLReleasePixelFormat(pixFormat);
if (NULL == fContext) {
SkDebugf("CGLCreateContext failed.");
return NULL;
}
CGLSetCurrentContext(fContext);
const GrGLInterface* interface = GrGLCreateNativeInterface();
if (NULL == interface) {
SkDebugf("Context could not create GL interface.\n");
this->destroyGLContext();
return NULL;
}
return interface;
}
void SkNativeGLContext::makeCurrent() const {
CGLSetCurrentContext(fContext);
}
void SkNativeGLContext::swapBuffers() const {
CGLFlushDrawable(fContext);
}
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